A past attendee or graduate (of either gender) of a college, university or other educational institution.
Any similar double sulphate in which either or both of the potassium and aluminium is wholly or partly replaced by other univalent or tervalent cations.
An astringent salt, usually occurring in the form of pale crystals, much used in the dyeing and tanning trade and in certain medicines, and now understood to be a double sulphate of potassium and aluminium (K₂SO₄·Al₂(SO₄)₃·24H₂O).
To steep in, or otherwise impregnate with, a solution of alum; to treat with alum.
One who studies under supervision of a renowned expert in their field.
A learner at a school under the supervision of a teacher.
The central dark part of an ocellated spot.
The hole in the middle of the iris of the eye, through which light passes to be focused on the retina.